Photocurrent response in heterojunction photodiode with quantum dot-in-well

We report the photocurrent response in heterojunction photodiode with quantum dots-quantum well. When this quantum dots-quantum well hybrid heterostructure is biased over 1.5V, the photocurrent response manifests itself a steplike enhancement, and increasing linearly with the light intensity. This p...

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Bibliographic Details
Published inIntegrated ferroelectrics Vol. 169; no. 1; pp. 107 - 112
Main Authors Lu, H. D., Guo, F. M.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 12.02.2016
Taylor & Francis Ltd
Subjects
Bias
current oscillation
Heterojunctions
Nanostructure
Photocurrent
photocurrent response
photodetector
Photodiodes
Photoelectric effect
Photons
Quantum dots
Qunatum dots
Sine waves
steplike
Tropics
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Summary:We report the photocurrent response in heterojunction photodiode with quantum dots-quantum well. When this quantum dots-quantum well hybrid heterostructure is biased over 1.5V, the photocurrent response manifests itself a steplike enhancement, and increasing linearly with the light intensity. This phenomenon is associated with photon storage. We furtherly tested the hysteresis tropic line of the device. With the further increase of radiated intensity to 5 μW, the current oscillation phenomenon is found. At the same time, we also discuss the deference between positive bias and negative bias. Finally, the output current has the nature of a sine wave. All of the above properties are manifested in the process out of the current response.
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ISSN:1058-4587
1607-8489
DOI:10.1080/10584587.2016.1163201